Scripture teaches us to speak and preach to, as well as to reason with blind men, because God, in whose name we speak and reason, can cause the blind to see. Jesus told Lazarus while dead to arise and come forth from the grave. The prophet preached to the dead bones in the valley till they took on flesh. So our reasoning and our preaching is not in vain inasmuch as God in Christ reasons and preaches through us. Once we were blind; God reasoned with us, perhaps through some human agency, and we saw.
– Cornelius Van Til, An Introduction to Systematic Theology p.69